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Question:
An optimistic model for a battery is just an ideal seat of EMF. A further realistic model commonly used to model actual batteries is
Answer:
Note that the internal resistance in sequence with the ideal seat of EMF is still a model. The battery both preserves a potential difference and provides resistance to any charge that may flow through it. Although the two effects in practice cannot be separated from each other. The complete material of the battery contributes to the resistance. The battery just acts similar to a resistor in series with an ideal seat of EMF. A battery can certainly not physically be separated into a resistor and an ideal seat of EMF.
The minimum real charge on any particle which can exist is: (1)1.6x 10 -19 coulomb (2) 1.6x 10 -10 coulomb (3)4.8 x 10 -10 coulomb (4)Zero Ans: (1)1.6x 10 -19 c
What two properties of electromagnetic waves are used to attach info to radio signals? a) By varying the amplitude of a radio wave, you can determine information. That is how A
What is the difference among isolation transformers and step up or step down transformer? Actually an isolation transformer may be physically the similar as a Step up/Step Down
Dielectric constant of vacuum is (A) Infinity. (B) 100. (C) One. (D) Zero. Ans: Dielectric constant of vacuum is one.
What are parallel forces?
It is defined as the dielectric loss expressed as the tangent of the angle between the reactance and the impedance vectors of the capacitor, it is denoted by D. FACTORS AFFECTIN
A weakly guiding fibre with a particular graded core index has cut-off V-values for its 2nd, 3rd and 4th modes of 2.5, 3.9 and 5.2, respectively. The core radius is 4 microns, the
Determine the divergence of the vector field at (1, 1, 0).
Q. What is the density of energy states in metals? Obtain an expression for the density of states for free electron gas in metals. Ans. Density of energy state is define
which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon
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